Indjana



2 Sheets-Sheet 1. T. L. BOSART.

FIFTH WHEEL.

(No Model.)

No. 471,806. Patented Mar. 29,1892.

1 0 P m w H (No Model.) 2 Sh'eets-Shet 2.

T. L. BOSART.

FIFTH WHEEL.

No. 471,806. Patented MarQZQ, 1892.

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UNITED STATES PATENT OFFICE.

TIMOTHY L. BOSART, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE YARYANFIFTH WHEEL COMPANY, OF SAME PLACE.

FIFTH-WHEEL.

SPECIFICATION forming part of Letters Patent No. 471,806, dated March29, 1892.

I Application filed October 1, 1891. Serial No. 407,419- (No model.)

To all whom it may concern:

Be it known that I, TIMOTHY L. BOSART, a citizenof the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Fifth -Wheels, ofwhich the following is a specification.

My present invention consists in certain improvements upon that shownand described in Letters Patent No. 306,371, dated October 7, 1884., toHarvey B. Yaryan,whereby the efliciency'of said device is improved, aswill be hereinafter more particularly described and claimed.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters of reference indicate similar parts, Figure1 is a top or plan view of a fifthwheel embodying my said improvements;Fig. 2, a central sectional view of the same, looking upwardly from thedotted line 2 2 in Fig. 1; Fig. 3,a front elevation; Fig. 4,a top planof portions of the castings forming those parts of a fifth wheel whichare immediately in contact, all other parts being removed; Fig. 5, anunder side plan of the same, and Fig. 6 a detail sectional view on thedotted line 6 6 in Figs. 4 and 5.

In said drawings the portions marked A represent the axle of a vehicle;B, the bolster; O, the reach; D,the king-bolt, and E the clips and boltsby which the axle and bolster are connected to the parts of thefifth-wheel.

Attached to the axle A is one portion A of the fifth-wheel. To thebolster B is attached another portion B of the fifth-wheel, and to thereach 0 are secured two portions 0' and C the former of which has a bossc',which is seated in a bearing in a plate A on the under side of theaxle A, and is held therein by the king-bolt D in such a manneras to beallowed a pivotal motion therein,while the upper portion 0 is boltedfast to the bolster B by bolts I). Said upper portion 0 also has a boss0 which is seated in a bearing in the portion B of the fifth-wheel, and,like the other, is held therein by the king-bolt D. The head of the boltD is held between the flanges c on the part G and the forward end of thepart 0 is further held in place by aflange a? on the part A The axle andbolster are held to their respective parts of the fifth-wheel by clipsand bolts E, as usual. The two parts of the fifthwheel A and B areunited primarily by a dovetailed formation in substantially the samemanner as in the Letters Patent above referred to. The form, however, issomewhat improved, and the bosses c c on the parts 0' and C and theseats therefor in the parts A and B are different from and additional toanything shown in said patent and improve the security and effectivenessof the device considerably. The device as a whole has been proved byextensive experiment and use to be a very superior one for the purpose,while it is inexpensive and easily applied.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is v The combination, in afifth-wheel, of the parts A and A attached to the axle, the part B,attached to the bolster, said parts A and A being connected together bya dovetailed formation, the parts 0 and 0 attached to the reach andprovided, respectively, with the bosses c 0 which are seated,respectively, in bearings in the parts A and B, and the kingbolt D,passing through the several parts 0 B, A, A and O, the whole beingarranged and operating substantiallyas shown and described.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 28th day of September, A. D. 1891.

TIMOTHY L. BOSAR'I. [1"... 8.]

Witnesses:

CHESTER BRADFORD, J. A. WALsH.

